On my model the average optioned 75D model S made around $20k gross profit in Q4. The average optioned 100D model S made around $36k gross profit (ex P option).
75D models were c.55% of S&X volume in 2018.
So 55K 75D sales make the same gross profit as 31k 100D sales. ($20k*55k/$36k).
For the c.55k 75D S&X customers in 2018, if 31k trade up to 100D after the 75D is removed, then total S&X gross profit will be flat yoy. That is, 76K 100D sales will make the same gross profit as 100k 75D and 100D sales did in 2018. The $2k price cut per car will then reduce annual gross profit by c.$150m. This all assumes no changes in COGs per car. Reducing to one shift at this level of production should lead to lower staff costs per car.
But it seems very difficult to persuade 31k/55k = 56% of customers to trade up $18k from 75D to 100D without a price cut, just simply by removing the cheaper option.
It should therefore have been immediately obvious to anybody paying any attention that S&X production right now should be down significantly, mostly because of actions deliberately taken by Tesla. The question now, as before, is what does Tesla do next.
If Tesla does nothing to change the S/X pricing or refresh the lineup from here, S&X gross profit should fall significantly in 2019. However I think it very unlikely Tesla does nothing. Some demand impact post US tariff reduction should have been anticipated for years, while the demand impact from 75D removal was Tesla's own decision, so must somehow contribute to higher future profits. I see very low chance that 75D was removed and cash flow turned off for no reason without a larger plan.
Rather than refresh the options, it is possible for Tesla to reduce 100D price to increase demand. There will be some balance where this maximises profit. However if this was the plan I don’t see why the price wasn’t cut immediately. I think it more likely we get new battery variants, whether or not that includes a move to GF1 cells. Particularly given that Elon mentioned in future S&X would be named “Long Range” etc rather than by battery size, which doesn’t make much sense if there is only one option.
My assumption has been that Tesla would have 3-4 weeks of reduced production after removing the 75D as it prepares to launch a refreshed set of options. This is completely consistent with the news from CNBC today. Note that CNBC mostly refers to S&X employees moving to 3 or moving to day shift and only notes 6 maintenance techs actually fired. This suggests staff could be redeployed to the night shift at fairly short notice if Tesla launches new options and ramps up demand again.
So overall the news from CNBC doesn’t change my view and I don’t attribute any weight to a line worker telling CNBC no refresh is coming – I don’t see why he would have any knowledge of Tesla’s extremely sensitive product refresh timeline. If anything, maybe now I think it may be a few weeks or months longer than I previously expected before new battery options are launched and S/X production ramped back up.